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The BRODIX GB Series is in a class by itself. These 13.5° valve angle heads were designed with sprint cars, late models, and drag racing in mind.
The GB 2000 series features improved spark plug angles, highly efficient combustion chambers, raised intake ports, moved valve centerlines, and a raised valve cover rail. Special components required for these heads are injectors or modified intake manifold, sheet metal valve covers, and a shaft rocker system.
Call one of our technicians to match a GB series head to your particular application.
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Intake Port
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Chamber Volume
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Valve Sizes Intake/Exhaust
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Exhaust
Pattern
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Valve
Centerline
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Intake Manifold
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WP GB 2000*
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286 cc
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76 cc
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2.200/1.580
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Spread Port
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85/125
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GM #24502653 Edelbrock #2955 With BRODIX Spacers and Valley Plate
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WP GB 2200
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282 cc
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69 cc
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2.200/1.580
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Spread Port
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85/125
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GM #24502653 Edelbrock #2955 With BRODIX Spacers and Valley Plate
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WP GB
2200+30
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291 cc
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69 cc
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2.200/1.580
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Spread Port
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85/125
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GM #24502653 Edelbrock #2955 With BRODIX Spacers and Valley Plate
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WP GB 2300
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309 cc
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49 cc
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2.200/1.580
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Spread Port
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75/125
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Fuel Injection
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WP GB 2400
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325 cc
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53 cc
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2.200/1.580
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Spread Port
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75/150
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Fuel Injection
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Cubic Inch
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Compression
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Camshaft
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RPM
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Application
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WP GB 2000*
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380 - 410
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13.5 Minimum
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Roller
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4500-8500
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Oval Track/
Drag Race
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WP GB 2200
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380 - 421
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13.5 Minimum
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Roller
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4500-8500
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Oval Track/
Drag Race
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WP GB 2200+30
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380 - 421
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13.5 Minimum
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Roller
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4500-8500
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Oval Track/
Drag Race
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WP GB 2300
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380 - 440
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13.5 Minimum
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Roller
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4500-8500
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Oval Track/
Drag Race
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WP GB 2400
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380 - 454
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13.5 Minimum
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Roller
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4500-8500
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Oval Track/
Drag Race
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*WP GB 2000 are available in several intake port sizes.
Ask a BRODIX representative which size would best fit your application.
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Valve Size
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0.200
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0.300
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0.400
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0.500
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0.600
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7.00
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WP GB 2000 - 286
(CNC Ported)
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2.200 Intake
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157
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238
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302
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353
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381
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399
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1.580 Exhaust
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109
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152
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205
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232
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241
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250
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WP GB 2200 - 282
(CNC Ported)
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2.200 Intake
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150
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223
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286
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336
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368
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383
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1.580 Exhaust
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104
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158
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210
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235
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246
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252
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WP GB 2200 - 282+30
(CNC Ported)
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2.200 Intake
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150
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224
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289
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337
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371
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396
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1.580 Intake
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104
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158
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210
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235
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246
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252
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WP GB 2300 - 309
(CNC Ported)
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2.200 Intake
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153
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231
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286
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342
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374
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394
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1.580 Exhaust
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100
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151
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216
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243
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250
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253
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WP GB 2400 - 325
(CNC Ported)
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2.200 Intake
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CALL FOR FLOW NUMBERS
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1.580 Exhaust
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GB 2200
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GB 2300 Lightened
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• PS CB:
Valve Bowls Blended
• PS MI:
Match Intake Port to BRODIX MG 2200
• PS Valve Job:
Competition Valve Job
• Intake Valves:
2.200 x 6.090 o.a.l. - BX 2200-609T
(GB 2000, GB 2200)
2.200 x 6.250 o.a.l. - BX 2200-625T
(GB 2300)
2.200 x 6.350 o.a.l. - BX 2200-635T
(GB 2400)
• Exhaust Valves:
1.580 x 6.090 o.a.l. - BR 91580
(GB 2000, GB 2200)
1.580 x 6.250 o.a.l. - BR 91582
(GB 2300)
1.580 x 6.350 o.a.l. - BR 91535D,
BX 1580-635 T 25 (GB 2400)
• Valve Springs:
1.550 Roller Valve Spring - GA 1000,
240 lb Closed, 550 lb Open,
1.950 Installed Height,
.700 Maximum Lift
• Retainers:
1.550 10° Titanium - MA 2398BR
• Valve Locks:
10° Jumbo - CC 611
• Rocker Studs:
Shaft System Required
• Valve Seals:
11/32 - US VS529V
Special Intake Gaskets and Spread Port Exhaust Gaskets Are Available Exclusively From BRODIX®
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• Torque Heads:
70 ft-lb
• Torque Rocker Studs:
40-45 ft-lb
• Intake Gaskets:
BRODIX MG 2200, COMETIC C5423
• Head Gaskets:
350 - FEL-PRO 1003, COMETIC C5399
400 - FEL-PRO 1004, COMETIC C5403
• Exhaust Gaskets:
Spread Port-
BRODIX MG 52464 (trim to fit),
COMETIC C5422
• Head Studs:
Available Exclusively From BRODIX -
BRODIX BR HSRP/GB CI BLK
(GB 2000)
BRODIX BR HSGB 2200 CI BLK
(GB 2200)
• Accessory Bolt Holes Are Drilled
• Spark Plug Starting Points:
NGK R5671A-10 for Alcohol or
NGK R5671A-9 for Racing Gas
• Spring Pockets:
1.550 Out of the Box,
May Be Cut to 1.625- No Larger or Deeper
• Valve Angle:
13.5°
• Angle Milling:
Not Available
• Flat Milling:
.0060 in Per cc
• Angle Machining:
Not Available
• Pushrod Slots:
Left Bare and Uncut
• Stud Girdle:
Not Available
• Rocker Arms:
JESEL or T&D Shaft System with 85/125 Spacing,
Check Heads for Intake Offset
• Lifters:
.180 Offset
• Pistons:
Special 13.5° With -12 Spark Plug Angle
• Pushrods:
Special Length
• Intake Face Angle:
BRODIX 5°
• Valve Covers:
Sheet Metal
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GB 2000 Bare
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Spread Port Exhaust
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1130000
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WP GB 2000 Bare
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Spread Port Exhaust
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1138001
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WP GB 2000 L Bare
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Spread Port Exhaust
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1138000
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WP GB 2000 Pkg
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Spread Port Exhaust
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1138101
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WP GB 2000 L Pkg
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Spread Port Exhaust
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1138100
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WP GB 2200 L Bare
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Spread Port Exhaust
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1138002
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WP GB 2300 L Bare
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Spread Port Exhaust
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1138003
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WP GB 2400 Bare
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Spread Port Exhaust
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1138004
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WP GB 2400 L Bare
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Spread Port Exhaust
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1138005
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WP GB 2400 Pkg
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Spread Port Exhaust
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1138102
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WP GB 2400 L Pkg
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Spread Port Exhaust
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1138103
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Phone: (479) 394-1075 • Fax: (479) 394-1996 • 301 Maple • P.O. Box 1347 • Mena, Arkansas 71953
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| Not legal for sale or use on pollution controlled motor vehicles. |
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© 2008 by Brodix, Inc.
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